/Engine/Source/Editor/BlueprintGraph/Classes/K2Node_CreateDelegate.h
Return Graph and Blueprint, when they should be notified about change. It allows to call BroadcastChanged only once per blueprint.
void HandleAnyChange ( [UEdGraph](API\Runtime\Engine\EdGraph\UEdGraph) *& OutGraph, [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) *& OutBlueprint )